BRIDGES ON THE SOFIA-STALIN RAILROAD LINE

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00810A007400180006-8
• Release Decision: RIPPUB
• Original Classification: S
• Document Page Count: 10
• Document Creation Date: December 21, 2016
• Document Release Date: May 27, 2008
• Sequence Number: 6
• Publication Date: July 12, 1955
• Content Type: REPORT

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CENTRAL INTELLIGENCE AGENCY
This material contains information affecting the National Defense of the United States within the meaning of the Espionage Laws, Title
18, U.S.C. gem. 793 and 794, the transmission or revelation of which in any manner to an unauthorised person is prohibited by law.
COUNTRY Bulgaria
REPORT
SUBJECT Bridges on the Sofia-Stalin
Railroad Line
DATE OF INFO.
PLACE ACQUIRED
DATE ACQUIRED
DATE DISTR.
NO. OF PAGES
REQUIREMENT NO.
REFERENCES
12 July 1955
10
RD
SOURCE EVALUATIONS ARE DEFINITIVE. APPRAISAL OF CONTENT IS TENtIAT_
25X1
25X1
1. The following is a brief description of the Sofia-Otalin railroad lines
a. Routes Sofia - Nesdra (1113 , 123-113) - Cherren Bryag (143-17* 121-05) -
Tam (1113-25, 1221-32) - !]anon - Lerski (N43-21 325-09) - Gorna
Orjakhoeitsa '- Popovo - Tsar Irmo (1113-12, 126-5h) - tolarovgrad -
Kaspiohan (111i3-18e 1927-11) - Sindal (113-07, 127-36) - Raudslna
(1813-10, 127-39) - alias
Total length of routes 580 kilasisters
c. Travelling tines appr=djotely 13 hours
d. Gauge of tracks t 11+3 centimeters (standard)
Number of tracks s one
Mode of locomotions steam
g. Number of bridges s 211
he Tunnels: 21 small tunnls, ranging from 100 meters to 1000 meters in
length, for a total of 5000 meters.
In 1950, the rails were replaced on the Sofia - Mesdra - Pleven - Levaki
stretch. A new freight station was constructed recently, in the city of Stalin.
STATE X ARMY I__ Z NAVY X AIR X FBI AEC ORR a 3k -- _
(Not.: Washington distribution indicated by "X"; Field distribution by
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2. The following is a list of the bridges on the Sofia - Stalin railroad line,
and the pap of this report on which the description of each bridge can be
founds
1) River bridge across the Vrabaishka Reba
N N
`
(3
(4
4(5
(7)
(8)
(W
(11)
(12)
(13)
)
(15)
(16)
(17)
(19)
(Zo)
(21)
N N Nt N
N N N N
a N a N
N Ni N Pt
a N N M
N N N N
Ni N a N
N N a. N
N N N a
N N' N a
N a a N
N N ar N
N N a a
a ai N a
N
N
N
Iskrets
Bovska Reka
Iskur
Elisenska Reka
Lyntibrodska Reka
Iskur
N
N
vit
Oruua
Rositea
N N N N Opaka
Bridge across a stream (name unknown)
N' N N N N N
N N N
(22) N N N N
(23) River bridge across the
(24) N N N N
N a
Ana Dore
DvvW-
page
a
N
N
a
N
2
2-3
3
3
3-4
4
4-5
N 5
N 5
5-6
N 6
a 6
6-7
N 7
N 7
N 7
N 8
a 8
" 8
N
N
a
N
9
9
9
10
3.
The following is a description of the river bridge across the Vrabnishka Beka:
a,
Locations 10 kilometers from the main station in Sofia;
b.
Type of bridges Steel girder, with a single span of 12 meters;
c.
Abutments: Stone maso
;
d.
Lengths Approximately
14
meters;
e.
f.
Widths light meters;
Height above river bed
s
Three maters;
g.
Service pathes One on
ea
ch side, 1.5 meters wide,
paved with steel plates;
h.
i,
j.
k.
1.
Side wallet Steel, ra
Capacity: 2500 kilogr
Current: Slow;
High water levels 1.5
Low water levels 50 t
ili
ams
0 t
o 6
ng type;
per square meter;
o 1.80 meters;
0 centimeters; and
m.
Slope of river banks
40
degrees.
4. The following is a description of the river bridge (No.2) across the Iskur:
a. Locations 300 meters south of the Vlado Trichkov station and 17,500 meters
from Sofia Main Station;
b. Types Steel girder, five-span, each 13.5 to 14 meters;
c. Abutments and piers: Stone masonry;
d. Lengths Approximately 80 meters;
e. Width: Eight meters;
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f. Height above river beds 10 to 11 asters;
g. Service paths: One on both sidei; 1.5 motors wide, paved in wood;
h. Side walls: Steel, railing type;
i. Capacity: 2500 kilogram per square meter;
j. Sw,ppett: Bgnalising-bed type;
k. Currents Slow;
1. High water levels 2-2.5 meters;
a. Low water levels 60 centimeters; and
no Slope of river banks: North bank, 60 degrees; south bank, 90 degrees.
5. The following is a description of the river bridge (No.3) across the Iskurs
a. Locations Three kilometers north of Vlado Trichkov station;
b. Types Steel girder, thaw-span, 15 meters each;
co Abutments and piers: Stone aasonry;
d. Length: 50 to 52 meters;
s. Widths sight meters;
f. Height above river beds Seven to eight meters;
g. Service pathos Ons on both sides;; each 1.5 meters wide, with wooden flooring;
h. Side walls: Steel, railing type;
i. Capacity: 2500 kilograms per square meter;
j. Supports Zq aliuing-bed type;
k. Currents Slow;
1. High water level: 2-2.5 asters;
no Low water levels 80 centimeters; and
no Slope of river banks: 90 degrees.
The following is a description of the river bridge (No. 4) across the
a. Locations 3.3 kilometers north of Vlaco Trichkov station;
b. Types Steel girder, with three spans, 13 to 15 meters each;
c. Abutments and pierss Stone masonry;
d. Lengths 47 to 50 meters;
e. Widths Sight asters;
f. Height above river beds Nine asters;
g. Service paths: One on both sides; each 1.5 meters wide, with wooden flooring;
h. Sida walls: Steel, railing type;
i. Capacity: 2500 kilogram per square meter;
J. Supports lqualising +ed type;
k. High water levels 2.5 asters;
1. Lou water levels 80 centimeters; and
a. Slope of river banks: 85 degrees.
7. The following is a description of the river bridge (No-5) across the Iskur:
a. Locations 3.9 kilometers north of Vlado Trichkov station;
b. Type: Steel girder, with three spans of 15 asters each;
c. Abutments and pierss Stone masonry;
d. Lengths 52 meters;
e. Width: Eight asters;
f. Height above river beds light to nine asters;
g. Service paths.- One on both sides; each 1.5 asters wide, with wooden flooring;
h. Side walls: Steel, railing type;
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i. Capacity: 2500 kilograms per square meter;
j. Supports Zqualising-bed type;
k. Currents Slow;
1. High water levels 2.5 to 2.8 meters;
m. Low water levels 80 centimeters; and
no Slope of river banks t 85 degrees.
8. The following is a description of the river bridge (No.6) across the Iskurs
a. Locations One kilometer north of Tomp.Sn station;
b. Types Steel girder, with two spans of 24 meters each;
c. Girdervork: Two (one on either side) continuous parabolic girders, with
straight understays of multiple trestle type;
d. Abutments and pierss Stone masonry;
e. Length: Approximately 52 meters;
f. Width: light motors;
g. Height above river bed: 10 meters;
h. Service pathos One on both sides; each 1.5 meters wide, with steel plate
flooring;
i. Capacity: 2500 kilograms per square aster;
J. Supports Equalizing-bed type;
k. Current: Swift;
1. High water marks 2.5 to three meters;
a. Low water marks 80 centimeters; and
no Slope of river banks: 85 degrees.
9.
The following is a description of the river bridge (No.?) across the Iskrets:
a. Location: 400 meters north of Svoge Railroad Station;
b. Type: Steel girder, with a single span of 30 meters;
co Abutments and piers: Stone masonry;
d. Lengths Approximately 33 meters;
e. Width: light meters;
f. Height above river bed: 15 asters;
g. Service pathos One on both sides; each 1.5 asters wide, with wooden flooring;
h. Side wallet Steel, railing type;
i. Capacity: 2500 kilograms per square meter;
J. Currents Swift;
k. High water marks 1.5 asters;
1. Low water marks 30 to 40 centimeters; and
m. Slope of river banks: 50 degrees.
10. The following is a description of the river bridge (No.8) across the Bovska Rekas
a. Locations 50 maters south of the Bow Railroad Station (approximately 10 kilo-
meters south of Svogs):
b. Type: Steel girder, with a single span of 28 to 30 meters;
c. Abutments and pierss Stone masonry;
d. Length: 30 to 32 motors
e. Width: 40 to 45 meters (6 to 7 tracks);
f. Height above river beds Zight motors;
g. Service pathos One on both sides; each two meters wide, with wooden flooring;
h. Side wallet Steel, railing type;
i. Capacity: 2500 kilograms per square aster;
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~? Supports Equalising-bed tips;
k. Currents Swift;
1. ffigh water narks unknown;
a. Low water aarks 140 centimeters (approx.);and
no Slope of river banks s 60 degrees.
11. The following is a description of the river bridge (No.9) across the Iskurs
a. Locations 800 asters fray Elissyea Station (which is situated approxi-
mately 1500 asters east of Zverino, in the *direction of Svoge) s
b. Types Steel girder, with two spans'of 20 asters each;
co Abutments and piers Stone masonry;
d. Lengths Approximately 45 asters;
e. Widths light asters;
f. Height above river beds light asters;
g. Service paths: One on both sides; each 1.5 asters wide, with wooden flooring;
h. Capacitys 2500 kilograms per square aster;
i. Currents Slag;
j. Bigh water mark: Two asters;
k. Low water mark: 60 ceati:rtera; and
1. Slope of river bank: 60 degrees.
12. The following is a description of the river bridge (8o.10) across the Elisenska
Reka:
a. Locations 1400 asters from-Eliaeyna Station (which is situated 14500 asters
east of Zverino, in the direction of Mesdra);
b. Type: Steel girder, with two spans of 15 meters each;
co Abutments and piers: Stows masonry;
d. Lengths Approximately 35 meters;
e. Widths light asters;
f. Height above waters light asters;
g. Service paths: One on both sides; each 1.5 asters wide, with wooden flooring;
he Side wallas Steel, railing type;
i. Capacity: 2500 kilograms per square aster;
J. Supports Equalising-bed type;
k. Current: Slow;
1. High water stark: unknown;
m. Low water marks 50 to 60 centimeters; and
n. Slope of river banks 60 to 65 degrees.
13. The following is a description of the river bridge (80.11) across the Lyutibrodska
Rekas
a. Location: 300 motors most of Lyutibrot Station (which is situated approximately
7.5 kiloeseters most of Yssdra);
b. Type: Steel girder, with two spans of 12 meters each;
co Abutments and piers: Stone masonry;
d. Length: Approximately 30 asters;
e. Width: Eight motors;
f. Height above river beds Four meters;
g< Service paths: One on both sides; each 1.5 motors wide, with wooden flooring;
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he Side walls: Steel, railing type;
i. Capacity: 2500 kilograms per square aster;
J. Support: Rqualising-bed type;
k. Currents Slow;
1. High water marks Two meters;
m. Low water mark: 15 to 20 centimeters; and
no slope of river bankst 50 degrees.
114. The following is a description of the river bridge (No.12) across the Iskur:
a. Locations 10 to 11 kilometers from l4esdra;
b. Types Steel girder, with three spans of 20 meters each;
co Abutments and piers: Stone masonry;
d, Length: Approximately 70 meters;
e. Width: Sight asters;
f. Height above river beds 10 meeters;
g. Side walls: Steel, railing type;
h. Service paths: One on each aide, each 1.5 asters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square aster;
j. Support: Equalising-bed type;
k. Current: Swift;
1. High water marks unknown;
a. Low water marks unknown; and
no Slope of river banks: 60 degrees.
15. The following is a description of the river bridge (No.33) across the Iskur:
a. Locations Approximately 800 meters east of Roman Railroad Station;
b. Types Steel girder, with three spans of 20 meters each;
c. Abutments and piers: Stone masonry;
d. Length: Approximately 75 meters;
e. Widths light meters;
f. Height above river bed: 10 meters;
g. Side walls: One on each side; each 1.5 asters wide, with wooden flooring;
h. Capacity: 2500 kilograms per square meter;
i. Supports Equalising-bed type;
J. Mined s: unknown;
k. Currents Swift;
1. High water marks unknown;
a. Low water mark: unknown; and
no Slope of river banks: 70 to 80 degrees.
16. The following is a description of the river bridge (No.14) across the Iskurt
a. Locations 16 kilometers south of Cherven Bryag Railroad Station, between
Chirepic and Karlukovo;
b. Type: Steel girder, with two spans of 20 meters each;
co Abutments and piers: Stone masonry;
d. Lengths Approximately 50 meters;
e. Width: Sight meters;
f. Height above river beds 10 motors;
g. Side walls: Steel, railing type;
h. Service paths: One on each side; each 1.5 mtere wide, with wooden flooring;
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i. Capacity: 2500 kilograms per square meter;
j. Supports lqualising-bed type;
k. Current: Nediwa; and
1. Slops of river banks: Right bank, 85 degrees; left bank, 50 degree,.
17. The following is a description of the river bridge (No.15) across the Vitt
a. Locations Four kilometers east of the Zasen Railroad Station, and immed-
iately west of a tunnel;
be Types Steel girder, with three spans of 10 meters each;
co Abutments and piers: Stone masonry;
d. Lengths 60 to 62 meters;
S. Widths light meters;
f. Height above river beds Six meters;
g. Side walls: Steel, railing type;
h. Service pathst One on each side; each 1.5 meters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square meter;
3? Support: lqualising-bed type;
k. Currents Slow;
1. High water marks Three meters;
in. Low water mark: One meter; and
no Slope of river banks t 60 degrees.
18. The following is a description of the river bridge (No.16) across the Ovum:
a, Locations Three kilometers east of the Leveki station;
be Types Steel girder, with three spans of 18 meters each;
co Abutments and piers: Stone masonry;
d. Length: Approximately 65 meters;
e. Width: light meters;
f. Height above river beds Six to seven meters;
g. Side walls: Steel, railing type;
h. Service paths: One on each side; each 1.5 meters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square meter;
J. Supports Equalising-bed type;
k. Currents Slow;
1. High water mark: Three meters;
in. Low water marks One meter; and
no Slope of river banks: 50 to 60 degrees.
19. The following is a description of the river bridge (No.17) across the Rositsas
a. Locations Two kilometers west of the Mikhaltsi Railroad Station;
be Types Steel girder, with two spans of 15 meters each;
c. Abutments and piers: Stone masonry;
d. Lengths Approximately 30 meters;
e. Width: light meters;
f. Height above river bed: Six to seven maters;
g. Side walls: Steel, railing type;
he Service paths: One on each side; each 1.5 meters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square meter;
3? Support: Equalising-bed type;
k. Current: Slow;
1. High water mark: unknown;
no Low water marks unknown; and
no Slope of river banks: 50 to 60 degrees.
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20. The following is a description of the river bridge (No.18) across the Opakas
a: Locations Seven kilometers east of the Popovo Railroad Station;
b. Types Steel girder, with two spans'of 15 meters each;
a. Abutments and pieris Stone masonry;
d. Length: 40 meters;
e. Widths light meters;
f. Height above river, beds Seven meters;
g. Side walls: Steel, railing type;
h: Service paths:- One on each aide; each 1.5 meters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square meter;
S
t
uppor
s Equalise ingbed type;
k. Current: Swift;
1. High water mark: unknown;
m. Low water narks 40 centimeters; and
n. Slope of river banks: 50 to 60 degrees.
21. The following is a description of the bridge
uknown):
(No.19) across
a stream (name
a. Locations Five kilometers east of the Tnrgovishte Station;
b. Types Steel girder., with two spans of 114 meters each;
c. Abutments and piers: Stone masonry;
d. Lengths Approximately 25 meters;
e. Widths Eight meters;
f. Height above river bank: Five meters;
g. Side walls: Steel, railing type;
h. Service pathos One on each side; each 1.5 meters wide, with wooden flooring;
i? Capacity: Equalizing-bed 2500kilograms per. square meter;
? type;
k. Current: Slow;
1. High water mark: 1.5 to two meters;
m. Low water mark: 50 centimeters; and
no Slope of river banks: 60 degrees.
22. The following is a description of the bridge (No.20) across a stream (name
unknown):
a. Locations Five kilometers east of Bolarovgrad Railroad Station;
b. Types Steel girder, with three spans of 15 meters each;
C*, Abutments and piers: Stone masonry;
d.- Length: Approximately 55 meters;
e. Widths Eight meters;
f. Height above river beds Nine meters;
g. Side walls: Steel, railing type;
h. Service paths: One on each side; each 1.5 meters wide, with wooden flooring;
i. Supports Equalising bed type;
j. Currents Slow;
k. High water mark: Two meters;
1. Low water mark: 30 centimeters; and
m. Slope of river banks: '60 degrees.
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23. The following is a description of the bridge (No.21) across a stream (name
unknown):
a. Location: 1.3 kilometers west of the Kaspichan Railroad Station;
b. Types Steel girder, single-span of 22 meters;
c. Abutments and piers: Stone masonry;
d. Length: Approximately 21; meters;
e. Widths Eight meters;
f. Height above river bed: Six meters;
g. Side walls: Steel, railing type;
h. Service paths: One on each side; each 1.5 meters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square meter;
j. Support: Equalizing-bed type;
k, Current: Swift;
1. High water mark: Two meters;
in. Low water mark: 30 centimeters; and
no Slope of river banks: 50 degrees.
2l. The following is a description of the bridge (No.22) across a stream (name
unknown):
a. Location: One kilometer north of the Provadiya Railroad Station;
b. Type: Steel girder, single-span of 15 meters;
c. Abutments and piers: Stone masonry;
d. Length: Approximately 18 meters;
e. Width: Eight meters;
f. Height above river bed: 12 meters;
g. Side walls: Steel, railing type;
h. Service paths: One on each side; each 1.5 meters wide, with wooden flooring;
i, Capacity: 2500 kilograms per square meter;
j. Support: Equalizing bed type;
k. Current: Slow;
1. High water marks 1.2 to 1.5 meters;
m, Low water mark: 50 centimeters; and
no Slope of river banks: 50 degrees.
25. The following is a description of the river bridge (No.23) across the Ana Dere:
a, Location: 300 to 1.00 meters south of the Sindel Railroad Station;
b. Type: Steel girder, single-span;
c. Abutments and piers: Stone masonry;
d, Length: 22 meters;
e, Width: Eight meters;
f. Height above river bed: Eight meters;
g. Side walls: Steel, railing type;
h. Service paths: One on each side; each 1.5 meters wide, with wooden flooring;
i. Capacity: 2500 kilograms per square meter;
J, Support: Equalizing-bed type;
k, Currents Very slow;
1. High water mark: 2.5 to three meters;
in. Low water marks One meter; and
no Slope of river banks: 50 to 60 degrees.
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26. The follming is a description of the river bridge (No.24) across the Devnya t
Locations 800 asters "at of the B elovo Railroad Station;
Typet Steel girder, with four spans of 18-20 meters each;
?butasats and piers: atone masonry;
Lengths ?pprc aat/ely 100 asters;
Width: Sight asters;
Height above riverbed: Seven to nine asters;
Side walla: Steel, railing typo;
Service pathst One on each Aide; each 1.5 asters wide, with wooden flooring;
Capacity: 2500 kilograms per. square aster;
Support: Zqualising-bed type;
Currents SSo*;
High water level: Two asters;
Low water levels One aster; and
Slope of river banks: 50 degrees.
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