US Bridges

SH 108 over Trib of N Fk N Bosque Ri

Fair

Erath County, Texas · 0.85 MI S of FM 3025 · Structure no. 020730034304022

Built
1944
81 years old, rebuilt 1996
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
3,607
2024 count
Owner
State
State Highway Agency

About this bridge

SH 108 over Trib of N Fk N Bosque Ri is a concrete culvert carrying SH 108 over Trib of N Fk N Bosque Ri in Erath County, Texas. It was built in 1944 and reconstructed in 1996, so it is 81 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 3,607 vehicles a day, roughly 14% of them trucks, projected to reach 3,450 by 2033. The structure is 27 ft (8.2 m) long and 85 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesSH 108
CrossesTrib of N Fk N Bosque Ri
Location0.85 MI S of FM 3025
RouteState Highway 108
StateTexas
Coordinates32.28864, -98.24908
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39 US tons
Inventory rating23.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width85 ft (26 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,607 (2024)
Projected traffic3,450 by 2033
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

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 108 over Trib of N Fk N Bosque Ri built?

It was built in 1944, making it 81 years old in 2025. It was reconstructed in 1996.

What condition is SH 108 over Trib of N Fk N Bosque Ri 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 August 2024.

How much traffic does SH 108 over Trib of N Fk N Bosque Ri carry?

About 3,607 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SH 108 over Trib of N Fk N Bosque Ri?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m) and a deck 85 ft wide.

Who owns SH 108 over Trib of N Fk N Bosque Ri?

It is owned by the State Highway Agency.