US Bridges

SH 105 over BNSF RR

Fair

Montgomery County, Texas · 0.25 MI NE of FM 1486 · Structure no. 121700033802083

Built
1948
77 years old, rebuilt 1994
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
365 ft
3 main spans
Daily traffic
9,967
2023 count
Owner
State
State Highway Agency

About this bridge

SH 105 over BNSF RR is a steel continuous stringer/multi-beam or girder carrying SH 105 over BNSF RR in Montgomery County, Texas. It was built in 1948 and reconstructed in 1994, so it is 77 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 9,967 vehicles a day, roughly 10% of them trucks, projected to reach 14,751 by 2042. The structure is 365 ft (111.3 m) long and 47 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSH 105
CrossesBNSF RR
Location0.25 MI NE of FM 1486
RouteState Highway 105
CountyMontgomery County
StateTexas
Coordinates30.36813, -95.77335
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+4 approach)
Design loadH 20
Structure length365 ft (111.3 m)
Longest span65 ft (19.8 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,967 (2023)
Projected traffic14,751 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$239,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 105 over BNSF RR built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1994.

What condition is SH 105 over BNSF RR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does SH 105 over BNSF RR carry?

About 9,967 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SH 105 over BNSF RR?

The structure is 365 ft (111.3 m) long with a longest span of 65 ft (19.8 m) and a deck 47 ft wide.

Who owns SH 105 over BNSF RR?

It is owned by the State Highway Agency.