US Bridges

FM 86 over Salt Branch

Fair

Caldwell County, Texas · 0.8 MI NE of US 183 · Structure no. 140280057102018

Built
1935
90 years old, rebuilt 2001
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
26 ft
4 main spans
Daily traffic
400
2023 count
Owner
State
State Highway Agency

About this bridge

FM 86 over Salt Branch is a concrete culvert carrying FM 86 over Salt Branch in Caldwell County, Texas. It was built in 1935 and reconstructed in 2001, so it is 90 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 400 vehicles a day, roughly 17% of them trucks, projected to reach 2,335 by 2042. The structure is 26 ft (7.9 m) long and 55 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM 86
CrossesSalt Branch
Location0.8 MI NE of US 183
RouteState Highway 86
StateTexas
Coordinates29.70508, -97.64086
Functional classUrban 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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span6 ft (1.8 m)
Deck width55 ft (16.7 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2023)
Projected traffic2,335 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 FM 86 over Salt Branch built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2001.

What condition is FM 86 over Salt Branch 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 October 2024.

How much traffic does FM 86 over Salt Branch carry?

About 400 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is FM 86 over Salt Branch?

The structure is 26 ft (7.9 m) long with a longest span of 6 ft (1.8 m) and a deck 55 ft wide.

Who owns FM 86 over Salt Branch?

It is owned by the State Highway Agency.