US Bridges

SH 105 over W Fork Spring Branch

Good

Montgomery County, Texas · 2.20 MI E of FM 1484 · Structure no. 121700033804067

Built
1943
82 years old, rebuilt 1987
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
120 ft
6 main spans
Daily traffic
12,598
2023 count
Owner
State
State Highway Agency

About this bridge

SH 105 over W Fork Spring Branch is a concrete slab carrying SH 105 over W Fork Spring Branch in Montgomery County, Texas. It was built in 1943 and reconstructed in 1987, so it is 82 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 12,598 vehicles a day, roughly 11% of them trucks, projected to reach 18,897 by 2042. The structure is 120 ft (36.6 m) long and 46 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSH 105
CrossesW Fork Spring Branch
Location2.20 MI E of FM 1484
RouteState Highway 105
StateTexas
Coordinates30.33059, -95.29123
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadH 20
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,598 (2023)
Projected traffic18,897 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 105 over W Fork Spring Branch built?

It was built in 1943, making it 82 years old in 2025. It was reconstructed in 1987.

What condition is SH 105 over W Fork Spring Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does SH 105 over W Fork Spring Branch carry?

About 12,598 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SH 105 over W Fork Spring Branch?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 46 ft wide.

Who owns SH 105 over W Fork Spring Branch?

It is owned by the State Highway Agency.