US Bridges

FM 73 over Trib Navasota Ri

Good

Limestone County, Texas · 7.10 MI NE of US 84 · Structure no. 091470067301008

Built
1960
65 years old, rebuilt 2010
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
729
2023 count
Owner
State
State Highway Agency

About this bridge

FM 73 over Trib Navasota Ri is a concrete culvert carrying FM 73 over Trib Navasota Ri in Limestone County, Texas. It was built in 1960 and reconstructed in 2010, so it is 65 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 729 vehicles a day, roughly 11% of them trucks, projected to reach 910 by 2038. The structure is 30 ft (9.1 m) long and 39 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesFM 73
CrossesTrib Navasota Ri
Location7.10 MI NE of US 84
RouteState Highway 73
CountyLimestone County
StateTexas
Coordinates31.71356, -96.70709
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to 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 loadOther
Structure length30 ft (9.1 m)
Longest span9 ft (2.7 m)
Deck width39 ft (12 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic729 (2023)
Projected traffic910 by 2038
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 73 over Trib Navasota Ri built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2010.

What condition is FM 73 over Trib Navasota Ri 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 November 2024.

How much traffic does FM 73 over Trib Navasota Ri carry?

About 729 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is FM 73 over Trib Navasota Ri?

The structure is 30 ft (9.1 m) long with a longest span of 9 ft (2.7 m) and a deck 39 ft wide.

Who owns FM 73 over Trib Navasota Ri?

It is owned by the State Highway Agency.