BNSF Tulip Avenue Bridge


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Name BNSF Tulip Avenue Bridge
Chicago, Burlington and Quincy Railroad Bridge #403.16
Built By Chicago, Burlington & Quincy Railroad
Currently Owned By BNSF Railway
Superstructure Contractor American Bridge Company of New York
Unknown
Length 26 Feet Total
Width 2 Tracks, 1 In Use
Height Above Ground 15 Feet (Estimated)
Superstructure Design Deck Plate Girder (South Track)
Concrete Modular Girder (North Track)
Substructure Design Concrete
Date Built 1902 (South Track)
c. 2000 (North Track)
Traffic Count 25 Trains/Day (Estimated)
Current Status In Use
Chicago, Burlington & Quincy Railroad Bridge Number 403.16
BNSF Railway Bridge Number 403.16
Significance Local
Documentation Date 11/12/2016

In May 1854, the Burlington and Missouri River Railroad (B&MR) began constructing a new mainline across southern Iowa, with the goal of connecting the Mississippi River at Burlington, Iowa to the Missouri River near Omaha, Nebraska.  In 1857, the first 34 miles between Burlington and the Skunk River near Rome, Iowa were completed.  In 1859, an additional 41 miles between the Skunk River and Ottumwa, Iowa were completed.  The railroad ceased progress during the Civil War, and eventually continued west in 1866.  That year, an additional 24 miles were completed between Ottumwa and Albia, Iowa.  Work continued in 1867, when an additional 46 miles were completed to Woodburn, Iowa.  Between 1867 and 1868, the Chicago, Burlington & Quincy Railroad (CB&Q) constructed a bridge across the Mississippi River to connect this line to their lines in Chicago.  In 1868, an additional 34 miles opened west to Afton, Iowa; followed by an additional 59 miles west to Red Oak, Iowa in 1869 and an additional 32 miles to the Pacific Junction, Iowa in 1870.  In 1872, the B&MR was leased by the CB&Q; and was fully absorbed by the company in 1875.  In the 1870s, the line would be extended into Nebraska, and in 1880, a bridge was constructed across the Missouri River at Plattsmouth.   

This line formed a critical backbone for the CB&Q, connecting Chicago to territories west of the Missouri River.  By the late 1870s, the need for a second track on this route had become apparent.  A second track was constructed between Chillicothe, Iowa and Albia in 1879, including a new alignment around the south side of Albia.  In 1880, a second track was constructed between Burlington and West Burlington, Iowa; as well as between Albia and Russell, Iowa.  In 1885, a second track was constructed between Russell and Chariton, Iowa; followed by between Ottumwa and Chillicothe the following year.  A large segment of second track opened between West Burlington and Mt. Pleasant, Iowa in 1889.  By the turn of the 20th Century, several sections of this line required extensive upgrades in addition to a second track.  In 1900, a second track was completed from Mt. Pleasant to Ottumwa and from Chariton to Creston, Iowa.  A new alignment was constructed between Fairfield, Iowa and Batavia, Iowa; and between Agency, Iowa and Ottumwa in 1900.  In 1901, the line was double tracked between Chariton and Creston.  The 1901 work involved constructing a second single track alignment between Indianola Junction and Lucas, Iowa; between Woodburn and Osceola, Iowa and between Murray, Iowa and Creston.  Between 1902 and 1905, the Creston to Pacific Junction segment was double tracked.  In 1904, a realignment between Nodaway, Iowa and Emerson, Iowa opened to traffic; followed by a large realignment between Malvern, Iowa and Pacific Junction in 1905.

Throughout the 20th Century, this line remained critical to the CB&Q.  The CB&Q invested significant capital into maintaining this line, replacing bridges, revising grades and changing the alignment in spots.  One of the most prominent changes came in 1949, when the westbound track near Frederic, Iowa was straightened, to eliminate a segment of curvy original mainline.  In 1970, CB&Q merged with Northern Pacific Railway and Great Northern Railway to form Burlington Northern Railroad (BN).  Several segments of this line were single tracked in the mid to late 20th Century.  In 1996, BN merged with Atchison, Topeka & Santa Fe Railway to form BNSF Railway, the current owner of this line.  Today, this line remains a critical piece of railroad infrastructure.  BNSF currently operates a portion of the Ottumwa Subdivision between Burlington and Creston; and a portion of the Creston Subdivision between Creston and Pacific Junction.  


View an article discussing the 1902-03 realignment project (digitalized by Google)

Located between Cromwell and Prescott, this small deck plate girder bridge carries a former Chicago, Burlington & Quincy Railroad mainline over Tulip Avenue. Originally, the CB&Q crossed Tulip Avenue slightly north of this bridge, before turning southeast and running south of the present line east of this bridge. Between 1902 and 1903, a significant project was undertaken to relocate the line and construct a second track. As part of the project, a number of underpasses were constructed, including the bridge at this location in 1902. The bridge remained largely unchanged until approximately 2000, when the north track span was replaced, giving the bridge its present configuration. Currently, the bridge consists of a 26-foot deck plate girder span carrying the south track and a 26-foot precast concrete modular girder span carrying the north track. The entire bridge is set onto concrete abutments. The south track span uses a standard design for the era, with two shallow plate girders and an open deck. The north track span also uses a standard design, consisting of concrete T-beams. The abutments utilize a standard CB&Q design, with sloped wing walls extending at different angles. Originally, the wing walls were stepped but concrete additions appear to have been added in the mid-20th Century. American Bridge Company fabricated the south track span, while it is unclear if the abutments were constructed by railroad company forces or by an unknown contractor. While the work for grading the new line was contracted, there is no clear indication that the bridge work was included in the contract. In addition, sections of the same project east of Creston utilized railroad company forces to construct the concrete bridges. Deck plate girder spans were popular for railroad use, as they were durable and easy to construct. Since the c. 2000 alterations, the bridge has remained largely unchanged. Today, the north track continues to carry a BNSF Railway mainline, while the south track is used as an access road. Overall, the bridge appears to be in fair to good condition, with no significant deterioration noted. The author has ranked this bridge as being locally significant, due to the common design. This is one of the only original deck plate girder underpasses remaining on the former CB&Q mainline through Iowa. Many were replaced in the mid-20th Century by concrete slabs, while others have been replaced in the 21st Century.


Citations

Build date and builder (south track superstructure) American Bridge Company plaque
Railroad History Citation ICC Valuation Information, Compiled by Richard S. Steele

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