US Bridges

FM 2159 over Chair Branch

Fair

Robertson County, Texas · 1.2 MI S of FM 1373 · Structure no. 171980202901003

Built
1962
63 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
103
2023 count
Owner
State
State Highway Agency

About this bridge

FM 2159 over Chair Branch is a concrete culvert carrying FM 2159 over Chair Branch in Robertson County, Texas. It was built in 1962, so it is 63 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 103 vehicles a day, roughly 31% of them trucks, projected to reach 200 by 2033. The structure is 29 ft (8.8 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 2159
CrossesChair Branch
Location1.2 MI S of FM 1373
RouteState Highway 2159
CountyRobertson County
StateTexas
Coordinates31.10704, -96.7485
Functional classRural Minor 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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span9 ft (2.8 m)
Deck width33 ft (10.1 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103 (2023)
Projected traffic200 by 2033
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 2159 over Chair Branch built?

It was built in 1962, making it 63 years old in 2025.

What condition is FM 2159 over Chair 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 November 2024.

How much traffic does FM 2159 over Chair Branch carry?

About 103 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is FM 2159 over Chair Branch?

The structure is 29 ft (8.8 m) long with a longest span of 9 ft (2.8 m) and a deck 33 ft wide.

Who owns FM 2159 over Chair Branch?

It is owned by the State Highway Agency.